Seasonal Affective Disorder. It is depression brought on by the ever shortening days and lack of light as fall progresses into winter. It is far more prevalent in northern areas, as the lack of light is more pronounced. For example, I read that only 2 percent of people living in Florida have it, while 15 percent of people living in New England are afflicted. I have been reading your recent posts and was wondering if this applies to you, possibly, living way up north. It's worth investigating, as I have found work arounds such as using special "Daylight" lamps during the worst of the winter.